Ego type batteries: Joyetech, Kanger, and Vision brands.
Generic or off-brand ego batteries: No
Replaceable rechargeable batteries: AW, Orbtronic, Panasonic, Samsung, Sanyo, Sony, (all listed are for IMR or hybrid batteries).
Replaceable rechargeable batteries: Protected ICR li-ion batteries (any brand); anything with "Fire" in its name (Trustfire, Surefire, Ultrafire); generic batteries.
High end mod: Provari by Provape
Budget mod: iTaste MVP by Innokin
Cartotanks: any pyrex tank using metal or delrin caps like IBTanked, Phiniac, Loki Labs, etc.
Cartotanks: any polycarbonate-tubed tank or any tank that uses rubber grommets instead of traditional end caps.
Cartomizers: Ikenvape
Clearomizers: Innokin iClear 16 and 30, Kanger Evod and Protanks.
Battery & Charger Vendor: RTD Vapor and Orbtonic
Online E-Cig Vendors: AltSmoke, Discount Vapors, My Vapor Store
High End Drip Tips: Drip Tip Designz
